godot/modules/visual_script/visual_script_property_selector.cpp

/*************************************************************************/
/*  visual_script_property_selector.cpp                                  */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                      https://godotengine.org                          */
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/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
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/* included in all copies or substantial portions of the Software.       */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/*************************************************************************/

#include "visual_script_property_selector.h"

#include "core/os/keyboard.h"
#include "editor/editor_node.h"
#include "editor/editor_scale.h"
#include "modules/visual_script/visual_script.h"
#include "modules/visual_script/visual_script_builtin_funcs.h"
#include "modules/visual_script/visual_script_flow_control.h"
#include "modules/visual_script/visual_script_func_nodes.h"
#include "modules/visual_script/visual_script_nodes.h"
#include "scene/main/node.h"
#include "scene/main/window.h"

void VisualScriptPropertySelector::_text_changed(const String &p_newtext) {
	_update_search();
}

void VisualScriptPropertySelector::_sbox_input(const Ref<InputEvent> &p_ie) {

	Ref<InputEventKey> k = p_ie;

	if (k.is_valid()) {

		switch (k->get_keycode()) {
			case KEY_UP:
			case KEY_DOWN:
			case KEY_PAGEUP:
			case KEY_PAGEDOWN: {

				search_options->call("_gui_input", k);
				search_box->accept_event();

				TreeItem *root = search_options->get_root();
				if (!root->get_children())
					break;

				TreeItem *current = search_options->get_selected();

				TreeItem *item = search_options->get_next_selected(root);
				while (item) {
					item->deselect(0);
					item = search_options->get_next_selected(item);
				}

				current->select(0);

			} break;
		}
	}
}

void VisualScriptPropertySelector::_update_search() {
	set_title(TTR("Search VisualScript"));

	search_options->clear();
	help_bit->set_text("");

	TreeItem *root = search_options->create_item();
	bool found = false;
	StringName base = base_type;
	List<StringName> base_list;
	while (base) {
		base_list.push_back(base);
		base = ClassDB::get_parent_class_nocheck(base);
	}

	for (List<StringName>::Element *E = base_list.front(); E; E = E->next()) {
		List<MethodInfo> methods;
		List<PropertyInfo> props;
		TreeItem *category = NULL;
		Ref<Texture2D> type_icons[Variant::VARIANT_MAX] = {
			vbc->get_icon("Variant", "EditorIcons"),
			vbc->get_icon("bool", "EditorIcons"),
			vbc->get_icon("int", "EditorIcons"),
			vbc->get_icon("float", "EditorIcons"),
			vbc->get_icon("String", "EditorIcons"),
			vbc->get_icon("Vector2", "EditorIcons"),
			vbc->get_icon("Rect2", "EditorIcons"),
			vbc->get_icon("Vector3", "EditorIcons"),
			vbc->get_icon("Transform2D", "EditorIcons"),
			vbc->get_icon("Plane", "EditorIcons"),
			vbc->get_icon("Quat", "EditorIcons"),
			vbc->get_icon("AABB", "EditorIcons"),
			vbc->get_icon("Basis", "EditorIcons"),
			vbc->get_icon("Transform", "EditorIcons"),
			vbc->get_icon("Color", "EditorIcons"),
			vbc->get_icon("Path", "EditorIcons"),
			vbc->get_icon("RID", "EditorIcons"),
			vbc->get_icon("Object", "EditorIcons"),
			vbc->get_icon("Dictionary", "EditorIcons"),
			vbc->get_icon("Array", "EditorIcons"),
			vbc->get_icon("PackedByteArray", "EditorIcons"),
			vbc->get_icon("PackedInt32Array", "EditorIcons"),
			vbc->get_icon("PackedFloat32Array", "EditorIcons"),
			vbc->get_icon("PackedInt64Array", "EditorIcons"),
			vbc->get_icon("PackedFloat64Array", "EditorIcons"),
			vbc->get_icon("PackedStringArray", "EditorIcons"),
			vbc->get_icon("PackedVector2Array", "EditorIcons"),
			vbc->get_icon("PackedVector3Array", "EditorIcons"),
			vbc->get_icon("PackedColorArray", "EditorIcons")
		};
		{
			String b = String(E->get());
			category = search_options->create_item(root);
			if (category) {
				category->set_text(0, b.replace_first("*", ""));
				category->set_selectable(0, false);
				Ref<Texture2D> icon;
				String rep = b.replace("*", "");
				icon = EditorNode::get_singleton()->get_class_icon(rep);
				category->set_icon(0, icon);
			}
		}
		if (properties || seq_connect) {
			if (instance) {
				instance->get_property_list(&props, true);
			} else {
				Object *obj = ObjectDB::get_instance(script);
				if (Object::cast_to<Script>(obj)) {
					Object::cast_to<Script>(obj)->get_script_property_list(&props);
				} else {
					ClassDB::get_property_list(E->get(), &props, true);
				}
			}
			for (List<PropertyInfo>::Element *F = props.front(); F; F = F->next()) {
				if (!(F->get().usage & PROPERTY_USAGE_EDITOR) && !(F->get().usage & PROPERTY_USAGE_SCRIPT_VARIABLE))
					continue;

				if (type_filter.size() && type_filter.find(F->get().type) == -1)
					continue;

				// capitalize() also converts underscore to space, we'll match again both possible styles
				String get_text_raw = String(vformat(TTR("Get %s"), F->get().name));
				String get_text = get_text_raw.capitalize();
				String set_text_raw = String(vformat(TTR("Set %s"), F->get().name));
				String set_text = set_text_raw.capitalize();
				String input = search_box->get_text().capitalize();

				if (input == String() || get_text_raw.findn(input) != -1 || get_text.findn(input) != -1) {
					TreeItem *item = search_options->create_item(category ? category : root);
					item->set_text(0, get_text);
					item->set_metadata(0, F->get().name);
					item->set_icon(0, type_icons[F->get().type]);
					item->set_metadata(1, "get");
					item->set_collapsed(1);
					item->set_selectable(0, true);
					item->set_selectable(1, false);
					item->set_selectable(2, false);
					item->set_metadata(2, connecting);
				}

				if (input == String() || set_text_raw.findn(input) != -1 || set_text.findn(input) != -1) {
					TreeItem *item = search_options->create_item(category ? category : root);
					item->set_text(0, set_text);
					item->set_metadata(0, F->get().name);
					item->set_icon(0, type_icons[F->get().type]);
					item->set_metadata(1, "set");
					item->set_selectable(0, true);
					item->set_selectable(1, false);
					item->set_selectable(2, false);
					item->set_metadata(2, connecting);
				}
			}
		}
		{
			if (type != Variant::NIL) {
				Variant v;
				Callable::CallError ce;
				v = Variant::construct(type, NULL, 0, ce);
				v.get_method_list(&methods);
			} else {

				Object *obj = ObjectDB::get_instance(script);
				if (Object::cast_to<Script>(obj)) {
					Object::cast_to<Script>(obj)->get_script_method_list(&methods);
				}

				ClassDB::get_method_list(E->get(), &methods, true, true);
			}
		}
		for (List<MethodInfo>::Element *M = methods.front(); M; M = M->next()) {

			String name = M->get().name.get_slice(":", 0);
			if (name.begins_with("_") && !(M->get().flags & METHOD_FLAG_VIRTUAL))
				continue;

			if (virtuals_only && !(M->get().flags & METHOD_FLAG_VIRTUAL))
				continue;

			if (!virtuals_only && (M->get().flags & METHOD_FLAG_VIRTUAL))
				continue;

			MethodInfo mi = M->get();
			String desc_arguments;
			if (mi.arguments.size() > 0) {
				desc_arguments = "(";
				for (int i = 0; i < mi.arguments.size(); i++) {

					if (i > 0) {
						desc_arguments += ", ";
					}
					if (mi.arguments[i].type == Variant::NIL) {
						desc_arguments += "var";
					} else if (mi.arguments[i].name.find(":") != -1) {
						desc_arguments += mi.arguments[i].name.get_slice(":", 1);
						mi.arguments[i].name = mi.arguments[i].name.get_slice(":", 0);
					} else {
						desc_arguments += Variant::get_type_name(mi.arguments[i].type);
					}
				}
				desc_arguments += ")";
			}
			String desc_raw = mi.name + desc_arguments;
			String desc = desc_raw.capitalize().replace("( ", "(");

			if (search_box->get_text() != String() &&
					name.findn(search_box->get_text()) == -1 &&
					desc.findn(search_box->get_text()) == -1 &&
					desc_raw.findn(search_box->get_text()) == -1) {
				continue;
			}

			TreeItem *item = search_options->create_item(category ? category : root);
			item->set_text(0, desc);
			item->set_icon(0, vbc->get_icon("MemberMethod", "EditorIcons"));
			item->set_metadata(0, name);
			item->set_selectable(0, true);

			item->set_metadata(1, "method");
			item->set_collapsed(1);
			item->set_selectable(1, false);

			item->set_selectable(2, false);
			item->set_metadata(2, connecting);
		}

		if (category && category->get_children() == NULL) {
			memdelete(category); //old category was unused
		}
	}
	if (properties) {
		if (!seq_connect && !visual_script_generic) {
			get_visual_node_names("flow_control/type_cast", Set<String>(), found, root, search_box);
			get_visual_node_names("functions/built_in/print", Set<String>(), found, root, search_box);
			get_visual_node_names("functions/by_type/" + Variant::get_type_name(type), Set<String>(), found, root, search_box);
			get_visual_node_names("functions/deconstruct/" + Variant::get_type_name(type), Set<String>(), found, root, search_box);
			get_visual_node_names("operators/compare/", Set<String>(), found, root, search_box);
			if (type == Variant::INT) {
				get_visual_node_names("operators/bitwise/", Set<String>(), found, root, search_box);
			}
			if (type == Variant::BOOL) {
				get_visual_node_names("operators/logic/", Set<String>(), found, root, search_box);
			}
			if (type == Variant::BOOL || type == Variant::INT || type == Variant::FLOAT || type == Variant::VECTOR2 || type == Variant::VECTOR3) {
				get_visual_node_names("operators/math/", Set<String>(), found, root, search_box);
			}
		}
	}

	if (seq_connect && !visual_script_generic) {
		String text = search_box->get_text();
		create_visualscript_item(String("VisualScriptCondition"), root, text, String("Condition"));
		create_visualscript_item(String("VisualScriptSwitch"), root, text, String("Switch"));
		create_visualscript_item(String("VisualScriptSequence"), root, text, String("Sequence"));
		create_visualscript_item(String("VisualScriptIterator"), root, text, String("Iterator"));
		create_visualscript_item(String("VisualScriptWhile"), root, text, String("While"));
		create_visualscript_item(String("VisualScriptReturn"), root, text, String("Return"));
		get_visual_node_names("flow_control/type_cast", Set<String>(), found, root, search_box);
		get_visual_node_names("functions/built_in/print", Set<String>(), found, root, search_box);
	}

	if ((properties || seq_connect) && visual_script_generic) {
		get_visual_node_names("", Set<String>(), found, root, search_box);
	}

	TreeItem *selected_item = search_options->search_item_text(search_box->get_text());
	if (!found && selected_item != NULL) {
		selected_item->select(0);
		found = true;
	}

	get_ok()->set_disabled(root->get_children() == NULL);
}

void VisualScriptPropertySelector::create_visualscript_item(const String &name, TreeItem *const root, const String &search_input, const String &text) {
	if (search_input == String() || text.findn(search_input) != -1) {
		TreeItem *item = search_options->create_item(root);
		item->set_text(0, text);
		item->set_icon(0, vbc->get_icon("VisualScript", "EditorIcons"));
		item->set_metadata(0, name);
		item->set_metadata(1, "action");
		item->set_selectable(0, true);
		item->set_collapsed(1);
		item->set_selectable(1, false);
		item->set_selectable(2, false);
		item->set_metadata(2, connecting);
	}
}

void VisualScriptPropertySelector::get_visual_node_names(const String &root_filter, const Set<String> &p_modifiers, bool &found, TreeItem *const root, LineEdit *const search_box) {
	Map<String, TreeItem *> path_cache;

	List<String> fnodes;
	VisualScriptLanguage::singleton->get_registered_node_names(&fnodes);

	for (List<String>::Element *E = fnodes.front(); E; E = E->next()) {
		if (!E->get().begins_with(root_filter)) {
			continue;
		}
		Vector<String> path = E->get().split("/");

		// check if the name has the filter
		bool in_filter = false;
		Vector<String> tx_filters = search_box->get_text().split(" ");
		for (int i = 0; i < tx_filters.size(); i++) {
			if (tx_filters[i] == "") {
				in_filter = true;
			} else {
				in_filter = false;
			}
			if (E->get().findn(tx_filters[i]) != -1) {
				in_filter = true;
				break;
			}
		}
		if (!in_filter) {
			continue;
		}

		bool in_modifier = p_modifiers.empty();
		for (Set<String>::Element *F = p_modifiers.front(); F && in_modifier; F = F->next()) {
			if (E->get().findn(F->get()) != -1)
				in_modifier = true;
		}
		if (!in_modifier) {
			continue;
		}

		TreeItem *item = search_options->create_item(root);
		Ref<VisualScriptNode> vnode = VisualScriptLanguage::singleton->create_node_from_name(E->get());
		Ref<VisualScriptOperator> vnode_operator = vnode;
		String type_name;
		if (vnode_operator.is_valid()) {
			String type;
			if (path.size() >= 2) {
				type = path[1];
			}
			type_name = type.capitalize() + " ";
		}
		Ref<VisualScriptFunctionCall> vnode_function_call = vnode;
		if (vnode_function_call.is_valid()) {
			String basic_type = Variant::get_type_name(vnode_function_call->get_basic_type());
			type_name = basic_type.capitalize() + " ";
		}
		Ref<VisualScriptConstructor> vnode_constructor = vnode;
		if (vnode_constructor.is_valid()) {
			type_name = "Construct ";
		}
		Ref<VisualScriptDeconstruct> vnode_deconstruct = vnode;
		if (vnode_deconstruct.is_valid()) {
			type_name = "Deconstruct ";
		}
		Vector<String> desc = path[path.size() - 1].replace("(", " ").replace(")", " ").replace(",", " ").split(" ");
		for (int i = 0; i < desc.size(); i++) {
			desc.write[i] = desc[i].capitalize();
			if (desc[i].ends_with(",")) {
				desc.write[i] = desc[i].replace(",", ", ");
			}
		}

		item->set_text(0, type_name + String("").join(desc));
		item->set_icon(0, vbc->get_icon("VisualScript", "EditorIcons"));
		item->set_selectable(0, true);
		item->set_metadata(0, E->get());
		item->set_selectable(0, true);
		item->set_metadata(1, "visualscript");
		item->set_selectable(1, false);
		item->set_selectable(2, false);
		item->set_metadata(2, connecting);
	}
}

void VisualScriptPropertySelector::_confirmed() {

	TreeItem *ti = search_options->get_selected();
	if (!ti)
		return;
	emit_signal("selected", ti->get_metadata(0), ti->get_metadata(1), ti->get_metadata(2));
	set_visible(false);
}

void VisualScriptPropertySelector::_item_selected() {

	help_bit->set_text("");

	TreeItem *item = search_options->get_selected();
	if (!item)
		return;
	String name = item->get_metadata(0);

	String class_type;
	if (type != Variant::NIL) {
		class_type = Variant::get_type_name(type);

	} else {
		class_type = base_type;
	}

	DocData *dd = EditorHelp::get_doc_data();
	String text;

	String at_class = class_type;

	while (at_class != String()) {

		Map<String, DocData::ClassDoc>::Element *E = dd->class_list.find(at_class);
		if (E) {
			for (int i = 0; i < E->get().properties.size(); i++) {
				if (E->get().properties[i].name == name) {
					text = E->get().properties[i].description;
				}
			}
		}

		at_class = ClassDB::get_parent_class_nocheck(at_class);
	}
	at_class = class_type;

	while (at_class != String()) {

		Map<String, DocData::ClassDoc>::Element *C = dd->class_list.find(at_class);
		if (C) {
			for (int i = 0; i < C->get().methods.size(); i++) {
				if (C->get().methods[i].name == name) {
					text = C->get().methods[i].description;
				}
			}
		}

		at_class = ClassDB::get_parent_class_nocheck(at_class);
	}
	Map<String, DocData::ClassDoc>::Element *T = dd->class_list.find(class_type);
	if (T) {
		for (int i = 0; i < T->get().methods.size(); i++) {
			Vector<String> functions = name.rsplit("/", false, 1);
			if (T->get().methods[i].name == functions[functions.size() - 1]) {
				text = T->get().methods[i].description;
			}
		}
	}

	List<String> *names = memnew(List<String>);
	VisualScriptLanguage::singleton->get_registered_node_names(names);
	if (names->find(name) != NULL) {
		Ref<VisualScriptOperator> operator_node = VisualScriptLanguage::singleton->create_node_from_name(name);
		if (operator_node.is_valid()) {
			Map<String, DocData::ClassDoc>::Element *F = dd->class_list.find(operator_node->get_class_name());
			if (F) {
				text = Variant::get_operator_name(operator_node->get_operator());
			}
		}
		Ref<VisualScriptTypeCast> typecast_node = VisualScriptLanguage::singleton->create_node_from_name(name);
		if (typecast_node.is_valid()) {
			Map<String, DocData::ClassDoc>::Element *F = dd->class_list.find(typecast_node->get_class_name());
			if (F) {
				text = F->get().description;
			}
		}

		Ref<VisualScriptBuiltinFunc> builtin_node = VisualScriptLanguage::singleton->create_node_from_name(name);
		if (builtin_node.is_valid()) {
			Map<String, DocData::ClassDoc>::Element *F = dd->class_list.find(builtin_node->get_class_name());
			if (F) {
				for (int i = 0; i < F->get().constants.size(); i++) {
					if (F->get().constants[i].value.to_int() == int(builtin_node->get_func())) {
						text = F->get().constants[i].description;
					}
				}
			}
		}
	}

	memdelete(names);

	if (text == String())
		return;

	help_bit->set_text(text);
}

void VisualScriptPropertySelector::_hide_requested() {
	_cancel_pressed(); // From AcceptDialog.
}

void VisualScriptPropertySelector::_notification(int p_what) {

	if (p_what == NOTIFICATION_ENTER_TREE) {

		connect("confirmed", callable_mp(this, &VisualScriptPropertySelector::_confirmed));
	}
}

void VisualScriptPropertySelector::select_method_from_base_type(const String &p_base, const String &p_current, const bool p_virtuals_only, const bool p_connecting, bool clear_text) {

	base_type = p_base;
	selected = p_current;
	type = Variant::NIL;
	properties = false;
	instance = NULL;
	virtuals_only = p_virtuals_only;

	show_window(.5f);
	if (clear_text)
		search_box->set_text("");
	else
		search_box->select_all();
	search_box->grab_focus();
	connecting = p_connecting;

	_update_search();
}

void VisualScriptPropertySelector::set_type_filter(const Vector<Variant::Type> &p_type_filter) {
	type_filter = p_type_filter;
}

void VisualScriptPropertySelector::select_from_base_type(const String &p_base, const String &p_current, bool p_virtuals_only, bool p_seq_connect, const bool p_connecting, bool clear_text) {

	base_type = p_base;
	selected = p_current;
	type = Variant::NIL;
	properties = true;
	visual_script_generic = false;
	instance = NULL;
	virtuals_only = p_virtuals_only;

	show_window(.5f);
	if (clear_text)
		search_box->set_text("");
	else
		search_box->select_all();
	search_box->grab_focus();
	seq_connect = p_seq_connect;
	connecting = p_connecting;

	_update_search();
}

void VisualScriptPropertySelector::select_from_script(const Ref<Script> &p_script, const String &p_current, const bool p_connecting, bool clear_text) {
	ERR_FAIL_COND(p_script.is_null());

	base_type = p_script->get_instance_base_type();
	selected = p_current;
	type = Variant::NIL;
	script = p_script->get_instance_id();
	properties = true;
	visual_script_generic = false;
	instance = NULL;
	virtuals_only = false;

	show_window(.5f);
	if (clear_text)
		search_box->set_text("");
	else
		search_box->select_all();
	search_box->grab_focus();
	seq_connect = false;
	connecting = p_connecting;

	_update_search();
}

void VisualScriptPropertySelector::select_from_basic_type(Variant::Type p_type, const String &p_current, const bool p_connecting, bool clear_text) {
	ERR_FAIL_COND(p_type == Variant::NIL);
	base_type = "";
	selected = p_current;
	type = p_type;
	properties = true;
	visual_script_generic = false;
	instance = NULL;
	virtuals_only = false;

	show_window(.5f);
	if (clear_text)
		search_box->set_text("");
	else
		search_box->select_all();
	search_box->grab_focus();
	seq_connect = false;
	connecting = p_connecting;

	_update_search();
}

void VisualScriptPropertySelector::select_from_action(const String &p_type, const String &p_current, const bool p_connecting, bool clear_text) {
	base_type = p_type;
	selected = p_current;
	type = Variant::NIL;
	properties = false;
	visual_script_generic = false;
	instance = NULL;
	virtuals_only = false;

	show_window(.5f);
	if (clear_text)
		search_box->set_text("");
	else
		search_box->select_all();
	search_box->grab_focus();
	seq_connect = true;
	connecting = p_connecting;

	_update_search();
}

void VisualScriptPropertySelector::select_from_instance(Object *p_instance, const String &p_current, const bool p_connecting, const String &p_basetype, bool clear_text) {
	base_type = p_basetype;
	selected = p_current;
	type = Variant::NIL;
	properties = true;
	visual_script_generic = false;
	instance = p_instance;
	virtuals_only = false;

	show_window(.5f);
	if (clear_text)
		search_box->set_text("");
	else
		search_box->select_all();
	search_box->grab_focus();
	seq_connect = false;
	connecting = p_connecting;

	_update_search();
}

void VisualScriptPropertySelector::select_from_visual_script(const String &p_base, const bool p_connecting, bool clear_text) {
	base_type = p_base;
	selected = "";
	type = Variant::NIL;
	properties = true;
	visual_script_generic = true;
	instance = NULL;
	virtuals_only = false;
	show_window(.5f);
	if (clear_text)
		search_box->set_text("");
	else
		search_box->select_all();
	search_box->grab_focus();
	connecting = p_connecting;

	_update_search();
}

void VisualScriptPropertySelector::show_window(float p_screen_ratio) {

	popup_centered_ratio(p_screen_ratio);
}

void VisualScriptPropertySelector::_bind_methods() {

	ADD_SIGNAL(MethodInfo("selected", PropertyInfo(Variant::STRING, "name"), PropertyInfo(Variant::STRING, "category"), PropertyInfo(Variant::BOOL, "connecting")));
}

VisualScriptPropertySelector::VisualScriptPropertySelector() {

	vbc = memnew(VBoxContainer);
	add_child(vbc);
	//set_child_rect(vbc);
	search_box = memnew(LineEdit);
	vbc->add_margin_child(TTR("Search:"), search_box);
	search_box->connect("text_changed", callable_mp(this, &VisualScriptPropertySelector::_text_changed));
	search_box->connect("gui_input", callable_mp(this, &VisualScriptPropertySelector::_sbox_input));
	search_options = memnew(Tree);
	vbc->add_margin_child(TTR("Matches:"), search_options, true);
	get_ok()->set_text(TTR("Open"));
	get_ok()->set_disabled(true);
	register_text_enter(search_box);
	set_hide_on_ok(false);
	search_options->connect("item_activated", callable_mp(this, &VisualScriptPropertySelector::_confirmed));
	search_options->connect("cell_selected", callable_mp(this, &VisualScriptPropertySelector::_item_selected));
	search_options->set_hide_root(true);
	search_options->set_hide_folding(true);
	virtuals_only = false;
	seq_connect = false;
	help_bit = memnew(EditorHelpBit);
	vbc->add_margin_child(TTR("Description:"), help_bit);
	help_bit->connect("request_hide", callable_mp(this, &VisualScriptPropertySelector::_hide_requested));
	search_options->set_columns(3);
	search_options->set_column_expand(1, false);
	search_options->set_column_expand(2, false);
}